Form for concrete.



I. W. MoGALLUM.

FORM FOR GONGRETE.

APPLICATION FILED NOV. 11, 1909.

Patent'gd Oct. 10,1911.

can)!!! PIANOGIAPH 60-.WA3HINOTON. D. C.

INGERSOLL W. MGCALLUM, OF ALLSTON, MASSACHUSETTS.

FGRM FOR CONCRETE.

nooaaci.

Specification of Letters Patent.

Application filed November 11. 1909.

Patented Oct. 10, 1911.

Serial No. 527,409.

To all whom it may concern:

Be it known that LINGnRsoLL W. MCCAL- LUM, a subject of King Edward VII, residing at Allston, in the county of Suffolk and State of Massachusetts, have invented new and useful Improvements in Forms for Concrete, of which the following is a specification.

This invention relates to improvements in forms for molding concrete, and the object is to provide a form or mold which shall be adapted for use in molding walls, one section at a time, and which may be quickly and conveniently removed from each section as completed and set up to mold another section, the preferred method of use being to mold a series of spaced sections and allow them to dry, after which another series of sections are molded in the spaces between the sections first molded, thus making a continuous wall.

The object is further to provide a form for concrete having means to normally hold the walls of the form in fixed relation with each other while the form is being filled with concrete and to actuate the walls of the form to carry the same out of contact with the sides of the completed section.

The object is further to provide a core or a plurality of cores and means to position the same with respect to the walls of the mold so as to form an air space or series of air spaces within the concrete wall.

The object is still further to provide means whereby the cores may be conveniently adjusted longitudinally of the wall and may be conveniently removed from their places after each section has been molded.

Still other objects and advantages will appear hereinafter.

The invention consists in the novel fea-' tures of construct-ion and in the combination and arrangement of parts set forth in the following specification and particularly pointed out in the claims.

Referring to the drawings: Figure 1 is a plan of a concrete form or mold embodying my invention. Fig. 2 is a side elevation of the form. Fig. 3 is an elevation of the form or mold viewed from the right hand side of Fig, 2. Fig. 4: is an enlarged detail plan section taken on line 44 of Fig. 3. Fig. 5 is a side elevation of a portion of a wall at a reduced scale illustrating the preferred method of use of the form in constructing a wall.

Like numerals refer to like parts throughout the several views of the drawings.

In the drawings, two opposed walls 10, 10 and two opposed walls 11, 11 are arranged to form a chamber preferably rectangular in form and the inner faces of the walls of each pair are preferably normally disposed in parallel planes. Secured to each of the walls 10 are two uprights 12 located adjacent to opposite ends, respectively, thereof, these uprights being connected to each other in pairs by rods 13, 13 pivoted thereto and preferably by making the rods 13 U-shaped in form and with their parallel sides extending through the uprights 12, as shown. The walls 11 are pivotally mounted on the rods 13, respectively, in any suitable manner as by providing each of said walls with marginal flanges 14: having ears 15 through which the rod extends.

The members of each pair of uprights 12 are connected to each other by toggles 16 each of which comprises two members 17 and 18 pivotally connected to each other at 19, the member 18 being pivoted at- 20 to one of the members 12 and the member 17 being provided with a slot 21 in which the upper extremity of the other member 12 is normally located, a removable pin 22 being provided to normally prevent movement longitudinally of said slot.

By reference to Fig. 3, it will be observed that the members 17 and 18 are normally so disposed that they constitute a positive lock which prevents swinging movement of the uprights 12 and walls 10. Secured to each of the members 18 is a handle member 23 by means of which the toggle may be lifted atits central portion thus drawing the uprights 12 together at their upper ends and moving the walls 10 away from each other.

Supported on the handle member 23 is a rod 2 1 and on this rod two cores 25 are hung by means of a series of hooks 26 secured thereto and hooked onto said rod. These cores are still further supported by a second rod 27 secured to the rods 13, there being provided a second series of hooks 28 secured properly positioned with respect to the walls 10, 10 and may be adjusted longitudinally thereof by sliding along the rods 24: and 27.

Pins 29 inserted in the uprights 12 which extend through the slots 21, normally prevent the member 17 from being lifted off of said members 12. It will be observed that the elfect of lifting the handles 23 is not only to move the walls 10 away from each other, but also to lift the cores 25. These cores, it will be observed, are hollow and open at top and bottomso that when they are lifted the air which passes freely therethrough preventsa suction which would otherwise take place at the bottom of each core which would tend to prevent their being lifted after the section wall has been molded.

As an alternative means of actuating the walls 10 and normally locking them in fixed relation with each other, I provide two rods 30, 30 having shoulders or flanges 31, 31 hearing against the inner faces of said walls and having check nuts 32 and 33, respectively, placed thereon on the outer faces of said walls, said nuts being properly adjusted to permit acertain amount of swinging movement of the walls 10 with relation to the rods 30. These rods are actuated by a rotatable spiral cam 34 mounted in a casing 35 secured to the end wall 11, it being understood that. this mechanism, if desired, may beduplicated on the other end of the form.

The cam 34 is provided with two spiral cam tracks 36 in which are located projections 37-on the rods 30, respectively, and the inner ends of these rods are guided in guides provided exteriorly'of the casing 35 with a handle 38 by means of which the same may be rotated-to move the rods simultaneously toward eachother or simultaneously away from each other, thus actuating the walls 10 to which said rods are connected, it being understood that when said walls arein their normal position they are positively locked by the cam 34.

In some instances, it is desirable to-employ the mechanism just described to actuate the walls 10 and in other instances it is desirable to render the latter mechanism inoperative by removing the nuts 32Iand 33 and swinging, the walls 11 out of place between the walls 10 at such-times when it is desired to have a form or mold open at the ends thereof and in such cases the actuating'mechanismwhich consists of toggles 16 is employed. When the cams are employed, it will, of course, be necessary to remove the pins 22 to permit a sliding movement of the upper extremities of the uprights 12 which are located'in the slots 21.

The walls 10 are provided with curved slots '39 through which the rods 30 extend, these slots being provided topermit a certainamount of swinging movement of the walls 11, but it willbe understood that normally the walls 11 are held by the frictional engagement of the walls 10 with the flanges 14. The walls 10 may have formed on or secured thereto two upwardly diverging walls 410 constituting chutes to guide the moist concrete into the chamber formed by the walls 10, 10 and 11, 11.

I The general operation of the form hereinbefore specifically described is as follows: The normal position of the parts is as shown in the drawings. The form is placed on a foundation wall with the walls 10 either resting upon or embracing the foundation wall and with the lower edges of the walls 11 resting upon the upper edge of the foundation wall to prevent the escape of the concrete. The concrete is then poured into the mold or form and tamped thereinto and after the section of wall thus formed has hardened to sufiicient extent the mold or form is removed therefrom by spreading the walls 10 in either of the two ways hereinbefore described and by spreading the walls 11 as hereinbefore described.

The cores 25, it will be observed, are slightly tapered so as to be easily freed by lifting the same, after which they may be entirely withdlrawn and the whole mold structure lifted from its place. According to the preferred method of use of the form, one section of wall is molded, as just described, and then a second section is molded separated from the first by a space and after a series of spaced sections have thus been produced and said sections have become thoroughly dried, a second series of sections are molded in the spaces between the sections first molded, this being accomplished by the use of the form or mold hereinbefore described and in molding, the latter sections the end walls 11 are either swung upwardly out of the way or else are entirely removed from the mold according to which may be the more convenient.

Fig. 5 illustrates a portion of a wall in process of construction according to the preferred. mode, in which a series of sections spaced apart are first molded and then the spaces subsequently filled, as hereinbefore described, but it will be understood that this is not the necessary mode of use of the 'mold or form, since it is possible to mold continuous sections of wall, if desired, by lifting-one of the end walls 11 of the mold or form.

Having thus described my invention, what I claim and desire by Letters Patent to secure is? 1. A form for concrete having, in combination, two opposed pivoted walls, a pair of pivoted walls extending transversely of and connected to said opposed walls, a toggle consisting of two members pivotally connected to each other and respectively connected to said opposed walls above their pivots to move one toward and away from the other and normally look the same in fixed position with respect to each other, and a core located between said walls and supported on said toggle.

2. A form for concrete having, in combination, two oppositely disposed walls, means to which said walls are pivoted on spaced axes extending longitudinally of said walls, uprights extending from said walls beyond said axes, a toggle consisting of two members pivotally connected to each other, said members being connected to said uprights, respectively, above said axes, and a core supported on said toggle and located between said walls.

3. A form for concrete having, in combination, two oppositely disposed walls, means to which said walls are pivoted on spaced axes extending longitudinally of said walls, uprights extending from said walls beyond said axes, a toggle consisting of two members pivotally connected to each other, said members being connected to said uprights, respectively, above said axes, and a core located between said walls and supported on said toggle and upon said means.

4L A form for concrete having, in combination, two oppositely disposed walls, means to which said walls are pivoted on spaced axes extending longitudinally of said walls,

uprights extending from said walls beyond said axes, a pair of toggles each consisting of two members pivotally connected to each other, said members being connected to said uprights, respectively, above said axes, a core located between said walls, a rod supported on said toggles, a device on said core by which the same is supported on said rod, a rod supported on said means, and a device on said core by which the same is supported 011 the last-mentioned rod.

5. A form for concrete having, in combination, two oppositely disposed Walls, means to which said walls are pivoted on spaced axes extending longitudinally of said walls, uprights extending from said walls beyond said axes, a pair of toggles each consisting of two members pivotally connected to each other, said members being connected to said uprights, respectively, above said axes, a core located between said walls, a rod supported on said toggles, and hooks on said core by which the same is supported on said rod and upon said means.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

INGERSOLL W. MGGALLUM. Witnesses:

LOUIS A. J ONES, SADni V. MCCARTHY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

